Grenada, Mississippi 7 Day Weather Forecast

Wx Forecast - Wx Discussion - Wx Aviation

047
FXUS64 KJAN 260621 AAA
AFDJAN

Area Forecast Discussion...UPDATED
National Weather Service Jackson MS
121 AM CDT Sun Jul 26 2026

...New AVIATION...

.KEY MESSAGES...

- Dangerous heat stress continues this weekend and will worsen
  into the middle of next week.

&&

.DISCUSSION...
Issued at 112 PM CDT Sat Jul 25 2026

Tonight through next Friday...Through much of this forecast period,
strong high pressure aloft remains wedged into the region from the
west, while high pressure at the surface remains wedged in from the
south.  While the stalled surface boundary to the north of the CWA
will washout through the weekend, an isolated shower or storm will
remain possible across the area each afternoon through mid-week in
this moist and unstable airmass.

At the end of the forecast period, next Thursday into Friday, the
aforementioned high aloft will weaken its presence across eastern
portion of the region.  This will allow troughing along the east
coast to deepen across the Southeast United States.  As this
happens, another surface boundary will attempt to sink south into
the CWA.  Thus, increasing rain chances across the area and possibly
bringing at least some temporary relief to the main weather focus of
this forecast period...the oppressive heat.

Beginning Sunday and continuing through at least mid-week, high
levels of both heat and humidity will yield a lengthy period of
dangerous heat stress across the forecast area.  While high
temperatures Sunday will generally hover in the mid and upper 90s,
they`ll range more in the upper 90s on Monday, and upper 90s to just
above 100 Tuesday into Wednesday.  These temperatures, in addition to
dew points in the 70s, will result in afternoon heat index values at
and above 106 across the CWA, again beginning Sunday.

As a result, a "Heat Advisory" has now been hoisted across the
forecast area on Sunday from 11 AM - 9 PM as indices range between
106-110 for at least a couple of hours.  The exception to this is
across Bolivar, Sunflower, & Leflore counties where afternoon heat
index values will climb above 110 for an hour or two.  Here, an
"Extreme Heat Warning" has been issued for Sunday from 11 AM until
9 PM.

As this dangerous heat stress increases Monday through mid-week, a
continuation of the "Heat Advisory" into the work week is expected,
with further expansion of the "Extreme Heat Warning" across the CWA
likely.  This will be messaged in the latest HWO graphic. However at
the moment, an assessment of the layout and continuation of heat-
related products will be made on a daily basis.  Therefore, please
continue to monitor the latest forecast for the most up-to-date
information. /19/

&&

.AVIATION...
(06Z TAFS)
Issued at 120 AM CDT Sun Jul 26 2026

VFR conditions wl prevail through the TAF period. /22/

&&

.PRELIMINARY POINT TEMPS/POPS...
Jackson       76  97  76  99 /   0   0   0   0
Meridian      76  98  76 100 /  20  10   0   0
Vicksburg     77  97  77  98 /   0   0   0   0
Hattiesburg   77  98  77 100 /   0  10   0  10
Natchez       76  97  76  99 /   0   0   0   0
Greenville    77  98  77  99 /   0   0   0   0
Greenwood     75  98  76  99 /   0  10   0   0

&&

.JAN WATCHES/WARNINGS/ADVISORIES...
MS...Heat Advisory from 11 AM this morning to 9 PM CDT this evening
     for MSZ026>066-072>074.

     Extreme Heat Warning from 11 AM this morning to 9 PM CDT this
     evening for MSZ018-019-025.

LA...Heat Advisory from 11 AM this morning to 9 PM CDT this evening
     for LAZ007>009-015-016-023>026.

AR...Heat Advisory from 11 AM this morning to 9 PM CDT this evening
     for ARZ074-075.

&&

$$

/19/22